.First() gets executed before the startup process has completed,
in particular before the required packages are loaded.
I think that one way to solve your problem is to replace
``plot(rnorm(100))'' by ``graphics::plot(stats::rnorm(100))''.
(Notice that you'll need to tell it where to find rnorm() as well.)
I believe there are other ways, involving setting ``hooks'' --- using
setHook() --- but what this actually means is very obscure (at least I
have never discovered an adequate explanation of what ``hooks'' are)
so I won't go there.
cheers,
Rolf Turner
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